Pi is an excellent example of a mathematical constant. That is geek talk for saying, "it's everywhere." Just like God, pi is behind so many things in life it is hard to appreciate just how encompassing it is to our lives.

Pi is everywhere, but we also cannot fully grasp it. By it's definition it is both an irrational and transcendent number. Just like God, you can approximate pi but never completely get the whole number.

All that to say that I think Pi is a really awesome truth that is part of God's truth.